Kin Group and Descent. The Madiha subgroups comprise bilateral kindreds, within which everyone is said to be related by ties of kinship, and the subgroup is normatively the widest extension of kinship. Marriage outside the Madiha subgroup results in the extension of kinship ties to individuals in other subgroups, but these ties rarely last for more than one or two generations. Subgroups are associated with geographical areas, but lack any other corporate characteristics. Descent per se is not reckoned by the Culina; membership in Madiha groups, for example, is determined by filiation and residence.
Kinship Terminology. Culina kin terminology divides kin into two groups, parallel kin and cross kin. Nonkin may be incorporated under cross-kin terms.